1. The question asks for Expected Value. Therefore the number for "Return" represents a monetary value and NOT a percentage. So it would be wrong to change a return of 4 to 0.04 when calculating Expected Value.

2. You don't need to find an average by dividing by 6, an average is calculated by multiplying by probability.

3. I can't find anywhere in the notes where Covariance and Correlation Coefficient are calculated.